Michele Bachmann is a featured speaker at a conference sponsored by conservative media outlet WorldNetDaily that also includes several "birthers" who have questioned President Obama's American citizenship.

Bachmann, who says she has no connection with the birther movement, will speak at the "Taking America Back" conference, held in Miami Sept. 16-18, along with WorldNetDaily founder Joseph Farah, Ann Coulter, former Rep. Tom Tancredo and nearly a dozen others.

Many of the speakers, including Farah, former presidential candidate Alan Keyes and author Jerome Corsi, are considered prominent birthers.

Keyes filed a lawsuit (dismissed last May) arguing that Obama was ineligible to be president because he was not born in the U.S. Corsi, who wrote "Obama Nation: Leftist Politics and the Cult of Personality," said during the presidential campaign that Obama had posted a "false, fake birth certificate" on the Web.

Farah, author of "The Tea Party Manifesto," has repeatedly called for Obama to produce a birth certificate, saying in February at the National Tea Party convention: "My dream is that if Barack Obama even seeks reelection as president in 2012, that he won't be able to go to any city, any town, any hamlet in America, without seeing signs that ask: 'Where's the birth certificate?' "

Bachmann's campaign manager Gina Countryman said the conference is not a birther conference and Bachmann has no history with the movement.

Bachmann "has absolutely no reason to question the president's citizenship, as much as her detractors wish was the case," Countryman said in an e-mail. "She's attending so she can share her passion for our nation's founding and belief in fiscally responsible, limited government with those in attendance."